19972648

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{197}}^1$

素因数の和:274

約数の個数: 64

約数和(自身を含む): 42768000

約数和(自身を除く): 22795352

約数列:

[1, 2, 4, 8, 19, 23, 29, 38, 46, 58, 76, 92, 116, 152, 184, 197, 232, 394, 437, 551, 667, 788, 874, 1102, 1334, 1576, 1748, 2204, 2668, 3496, 3743, 4408, 4531, 5336, 5713, 7486, 9062, 11426, 12673, 14972, 18124, 22852, 25346, 29944, 36248, 45704, 50692, 86089, 101384, 108547, 131399, 172178, 217094, 262798, 344356, 434188, 525596, 688712, 868376, 1051192, 2496581, 4993162, 9986324, 19972648]

約数ペア:

[(1, 19972648), (2, 9986324), (4, 4993162), (8, 2496581), (19, 1051192), (23, 868376), (29, 688712), (38, 525596), (46, 434188), (58, 344356), (76, 262798), (92, 217094), (116, 172178), (152, 131399), (184, 108547), (197, 101384), (232, 86089), (394, 50692), (437, 45704), (551, 36248), (667, 29944), (788, 25346), (874, 22852), (1102, 18124), (1334, 14972), (1576, 12673), (1748, 11426), (2204, 9062), (2668, 7486), (3496, 5713), (3743, 5336), (4408, 4531)]